[DjSoftero]

not tested:

Spoiler

PHP Code:

#include < amxmodx >  
#include < engine >  
#include < cstrike >  
#include < hamsandwich >  

new const g_szGirlsHatModel[] = "models/pinkhat.mdl"

#define PINK_HAT_ACCESS ADMIN_LEVEL_B
new const GLOW_THICKNESS = 1;//the larger the number, the thicker glow is
new const PinkHatColor[] = {196, 68, 171}

new const g_sz_colors[CsTeams][] =  {
        {},
        {255,0,0},
        {0,0,255},
        {}
    };

new const g_szHatModel[ CsTeams ][ ] = {  
    "",  
    "models/santahat.mdl",  
    "models/santahat_blue.mdl",  
    ""  
};  

new has_phat[33] 
new g_iHats[ 33 ];  

public plugin_init( ) {  
    register_plugin( "Santa Hat + Snow", "1.3", "xPaw" );  
      
    register_cvar( "santa_hat", "1.3", FCVAR_SERVER );  
      
    register_event( "TeamInfo", "EventTeamInfo", "a" );  
      
    RegisterHam( Ham_Spawn, "player", "FwdHamPlayerSpawn", 1 );  
}  

public plugin_precache( ) {  
//  create_entity( "env_snow" );  
      
    precache_model( g_szHatModel[ CS_TEAM_T ] );  
    precache_model( g_szHatModel[ CS_TEAM_CT ] );  
    precache_model(g_szGirlsHatModel) 
}  

public client_putinserver(id) {
    if(get_user_flags(id) & PINK_HAT_ACCESS)
        has_phat[id]=1;
} 

public client_disconnect( id ) {
    if( is_valid_ent( g_iHats[ id ] ) )
        remove_entity( g_iHats[ id ] );
    has_phat[id]=0;
} 

public FwdHamPlayerSpawn( const id ) {
    if( is_user_alive( id ) ) {
        new iEntity = g_iHats[ id ];
        
        if( !is_valid_ent( iEntity ) ) {
            if( !( iEntity = g_iHats[ id ] = create_entity( "info_target" ) ) )
                return;
              
            new CsTeams:iTeam = cs_get_user_team( id );

            if( iTeam != CS_TEAM_T && iTeam != CS_TEAM_CT )
                iTeam = CS_TEAM_T;
            if(has_phat[id]) {
                entity_set_model( iEntity, g_szGirlsHatModel)
                set_ent_rendering( iEntity, kRenderFxGlowShell, PinkHatColor[0], PinkHatColor[1], PinkHatColor[2], kRenderNormal, GLOW_THICKNESS);//glow for purple hat
            }
            else {
                entity_set_model( iEntity, g_szHatModel[ iTeam ] );
                set_ent_rendering( iEntity, kRenderFxGlowShell, g_sz_colors[iTeam][0], g_sz_colors[iTeam][1], g_sz_colors[iTeam][2], kRenderNormal, GLOW_THICKNESS);
            }
            entity_set_int( iEntity, EV_INT_movetype, MOVETYPE_FOLLOW );  
            entity_set_edict( iEntity, EV_ENT_aiment, id );  
        }  
    }  
}  

public EventTeamInfo( ) {  
    new id = read_data( 1 ), iEntity = g_iHats[ id ];  
      
    if( !is_valid_ent( iEntity ) ) {  
        if( iEntity > 0 )  
            g_iHats[ id ] = 0;  
          
        return;  
    }  
      
    new szTeam[ 2 ];  
    read_data( 2, szTeam, 1 );  
    if(has_phat[id]) {
        entity_set_model( iEntity, g_szGirlsHatModel)
        set_ent_rendering( iEntity, kRenderFxGlowShell, PinkHatColor[0], PinkHatColor[1], PinkHatColor[2], kRenderNormal, GLOW_THICKNESS)//glow for purple hat
    }
    else if( szTeam[ 0 ] == 'C' ) {
        entity_set_model( iEntity, g_szHatModel[ CS_TEAM_CT ] );
        set_ent_rendering( iEntity, kRenderFxGlowShell, g_sz_colors[CS_TEAM_CT][0], g_sz_colors[CS_TEAM_CT][1], g_sz_colors[CS_TEAM_CT][2], kRenderNormal, GLOW_THICKNESS)//blue glow shell
    } 
    else{
        entity_set_model( iEntity, g_szHatModel[ CS_TEAM_T ] );
        set_ent_rendering( iEntity, kRenderFxGlowShell, g_sz_colors[CS_TEAM_T][0], g_sz_colors[CS_TEAM_T][1], g_sz_colors[CS_TEAM_T][2], kRenderNormal, GLOW_THICKNESS)//red shell
    }
    return; 

}